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International Relations·Easy

Consider the following statements about the crust of the earth: 1. The continental crust is thinner, as compared to the oceanic crust. 2. The continental crust is thicker in the areas of major mountain systems. Which of the statements given above is/are correct?

Consider the following statements about the crust of the earth:

1. The continental crust is thinner, as compared to the oceanic crust.

2. The continental crust is thicker in the areas of major mountain systems.

Which of the statements given above is/are correct?

Options

  1. a.

    1 only

  2. b.

    2 only

    Correct answer
  3. c.

    Both 1 and 2

  4. d.

    Neither 1 nor 2

Explanation

  • Crust is the outermost solid part of the earth. It is brittle in nature. The thickness of the crust varies under the oceanic and continental areas.
  • The oceanic crust is thinner, as compared to the continental crust. The mean thickness of the oceanic crust is 5 km, whereas that of the continental court is around 30 km. The continental crust is thicker in the areas of major mountain system.
  • It is as much as 70 km thick in the Himalayan region. It is made up of heavier rocks having density of 3 g/cm3. This type of rock, found in the oceanic crust, is basalt. The mean density of the material in the oceanic crust is 2.7 g/cm3.

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